Gas alarm



FIG. 1 is a perspective view of the gas alarm showing my new design;

FIG. 2 is a perspective view thereof from another angle;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view of thereof; and,

FIG. 8 is a bottom plan view of thereof.

The broken lines shown in the drawings illustrate portions of the gas alarm that form no part of the claimed design. 

CLAIM The ornamental design for a gas alarm, as shown and described. 